Aug 01 23:57:28.047 INFO checking ruma-client-api-0.1.0 against 1.27.2 for lazy_static-1
Aug 01 23:57:28.047 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:57:28.047 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:57:28.047 INFO running `"docker" "create" "-v" "/tmp/crater.TQsA3JuKZktG:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 01 23:57:28.181 INFO blam! 9b916cfe2e9f6700330e15c77d7d5cfacef8231a26d087f48781149bbe10703a
Aug 01 23:57:28.183 INFO running `"docker" "start" "-a" "9b916cfe2e9f6700330e15c77d7d5cfacef8231a26d087f48781149bbe10703a"`
Aug 01 23:57:29.471 INFO kablam!    Compiling take v0.1.0
Aug 01 23:57:29.471 INFO kablam!    Compiling smallvec v0.2.1
Aug 01 23:57:29.473 INFO kablam!    Compiling slab v0.3.0
Aug 01 23:57:29.481 INFO kablam!     Checking ruma-identifiers v0.11.0
Aug 01 23:57:29.482 INFO kablam!    Compiling ring v0.9.7
Aug 01 23:57:29.487 INFO kablam!     Checking ruma-api v0.4.0
Aug 01 23:57:30.648 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:57:30.648 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ruma-identifiers-0.11.0/src/lib.rs:4:1
Aug 01 23:57:30.648 INFO kablam!   |
Aug 01 23:57:30.648 INFO kablam! 4 | #![feature(try_from)]
Aug 01 23:57:30.648 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:57:30.649 INFO kablam! 
Aug 01 23:57:30.652 INFO kablam! error: aborting due to previous error
Aug 01 23:57:30.652 INFO kablam! 
Aug 01 23:57:30.653 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:57:30.663 INFO kablam! error: Could not compile `ruma-identifiers`.
Aug 01 23:57:30.663 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:57:31.219 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:57:31.219 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ruma-api-0.4.0/src/lib.rs:14:1
Aug 01 23:57:31.219 INFO kablam!    |
Aug 01 23:57:31.219 INFO kablam! 14 | #![feature(associated_consts, try_from)]
Aug 01 23:57:31.219 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:57:31.219 INFO kablam! 
Aug 01 23:57:31.219 INFO kablam! error: aborting due to previous error
Aug 01 23:57:31.219 INFO kablam! 
Aug 01 23:57:31.219 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:57:31.220 INFO kablam! error: Could not compile `ruma-api`.
Aug 01 23:57:31.220 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:57:35.933 INFO kablam! error: build failed
Aug 01 23:57:35.935 INFO kablam! su: No module specific data is present
Aug 01 23:57:36.820 INFO running `"docker" "rm" "-f" "9b916cfe2e9f6700330e15c77d7d5cfacef8231a26d087f48781149bbe10703a"`
Aug 01 23:57:37.006 INFO blam! 9b916cfe2e9f6700330e15c77d7d5cfacef8231a26d087f48781149bbe10703a